The purpose of the names of the girls in the poem "maggie and milly and molly and may" by e.e. cummings is best captured by the option:
The names are alliterative and serve to convey a lighter mood to the poem.
The repetition of the initial sounds in the names creates a musical quality that contributes to the playful and whimsical tone of the poem. The names help establish a carefree atmosphere as the girls explore the beach and encounter different experiences.